1.8 Updates: Features from the Pre-Release!

Does the new achievement actually work? I killed 3 skeletons now in more than 50 blocks distance but I didn't get the achievement.

I built a target post exactly 50 blocks away from the tower I'm shooting from and determined that I have to aim 7 blocks above the target to hit it in this distance.
The loot of the third skeleton lay clearly far beyond that 50 meter mark.